screech vs holler

screech and holler both are nouns.

Word	Noun	Adjective	Verb	Adverb
screech	Yes	No	Yes	No
holler	Yes	No	Yes	No

As verbs, holler is a hypernym of screech; that is, holler is a word with a broader meaning than screech:

Other hypernyms of screech include call, cry, hollo, scream, shout, shout out, squall, yell.

screech (noun)	holler (noun)
sharp piercing cry	a very loud utterance (like the sound of an animal)
a high-pitched noise resembling a human cry	a small valley between mountains

screech (verb)	holler (verb)
utter a harsh abrupt scream	complain
make a high-pitched, screeching noise	utter a sudden loud cry
	shout out